/Engine/Source/Runtime/Engine/Classes/Lightmass/VolumetricLightmapDensityVolume.h
Provides local control over volumetric lightmap density. Only convex shapes supported.
class AVolumetricLightmapDensityVolume : public [AVolume](API\Runtime\Engine\GameFramework\AVolume)
FInt32Interval
AllowedMipLevelRange
The Volumetric Lightmap has 3 mipmaps, where the highest density mipmap (mip0) corresponds to VolumetricLightmapDetailCellSize.